. (2001). . (e123787). Strategy, 9(3), e123787
. "" .e123787 , Strategy, 9, 3, 2001, e123787.
. (2001). '', Strategy, 9(3), e123787.
, "," Strategy, 9 3 (2001): e123787,
. . Strategy. 2001;9(3):e123787 (In Persian).
